Milking-machine.



M. L. NRFHSd WILKING JTACHHWs APPLICATION man oc. 24. 19M.

mama Sept, 18, 1917.,

2 SHEETS-SHEET l.

l 11|: ill: Ilxlx WITNESSES With this construction T FFlQE.

MARVIN L. NORRIS, OF FQRT WAYNE, INDIANA.

MILKING-MACHIN E.

Specication of Letters Patent.

Patented Sept. 18, 1917.

Application led October 24,1914. Serial No. 868,416.

To all wlwm 'it may concern.'

ABe it known that I, MARVIN L. Norms, a citizen of the UnitedStates, and resident of Fort Wayne, in the c'oulylty of llen and State of Indiana, haveinvented a new and Improved Milking-Machine, of which the following is a full, clear, and exact description.

My invention has for its obj ect to provide a milking machine with units which. are compact and which may be readily cleaned, the units being supported `by the teat cups which are attached to the teats of the cow, and serving to convey milk to pails or receptacles which may be disposed under the units.

A milk'ehamber forms-.a part of each4 unit,`each milk chamber having an opening with a valve seat in its bottom and a valve which is pressed upwardly against the valve seat by a spring for closing the opening. ressure in the milk chamber may be lowere to draw milk from the cows udder when the pressure in the milk chamber may be increased slowly to restore the blood and the tissues in the teats to normal condition and at the same time press the valve down a ainst the resiliency of the spring to permit the milk to flow through the opening to a pail disposed below the unit.

Additional objects of the invention will appear in the following specification in which ,the preferred form of my invention is disclosed.

In the drawings similar reference characters refer to similar parts in all the `views in whichi Figure 1 is a perspective view showing how my milking machine is used; 1

Fig. 2 is a perspective view showing one of the units and how it is attached -to the pipe connected with a pump;

Fig. 3 `is a sectional view of the unit showrrfin. Fig. 2;

Figi' 4 is an inverted plan view of the bottom of the unit showing the valve and the spring for holding the valve on its seat; and

Fig. 5 is a sectional the cups.

By referring to the drawin seen that the unit 6 has a mi chamber 7, the bottom of which is o en and around which there is disposed a va ve seat 8 against which the valve 9l is normally disposed.

View showing one of it will be This valve 9 is held on its seat by the spring which isA heart in shape and which has three elbows 11 disposed within the peripheral shoulder 12 at the bottom of the unit, the spring 10 having terminals 13 which press upwardly against' the valve 9. As shown in the drawings, the unit Ghas four nipples 14 extending upwardly from the chamber 7 with which they are connected, there being also a central nipple 15 which is connected with the said chamber. The ends 16 of the tubes 17 are disposed over the nipples 14, these tubes 17 having Stoppers 18 with passages 19 so that when a stopper 18 is disposed in the bottom 20 of a teat cup 21, it will make a tight t. However, the construction is such that the Stoppers 18 may be readily removed from the teat cups to permit .of their being cleansed. The walls in the teat cups diverge downwardly and also diverge upwardly as best shown in Fig. 5 of the drawings, the upper end of the teat cup having a rim over which is disposed a rubber tubular member 23 with an opening 24, it being possible `to draw this rubber tubular member 23 over the rim 22, so that it will resemble a diaphragm at 25 with the opening 24 in the middle. ,This rubber tubular member 23 may, of course, be readily removed from thc teat cup 21. `It will also be understood that as the walls of the teat cup diverge at both ends it may be conveniently cleansed. lt will also be seen that..

as the teat cup`21 may be readily removed from the stopper 18, another teat cup of another desired size may be substituted should occasion require.

When the machine is used the unit 6 is disposed `beneath the cows udder and the teat cups 21 are su ported by the teats. However, before doing this, l prefer to engage a tube 26 with the nipple l5, this tube 26 having a stopper 27 which is disposed in an opening 28 in the T 29 connected with a pipe 30, which in turn, is connected with a pump 31". This pump isprovided for alternately increasing and decreasing air pressure in the pipe 30. When the pump has been started 4the tubes 17 are permitted to fall so that there will be very little suetion in thetubes until the teat cups 21 are disposed on the teats of the cow. The teat cups 21 are then disposed-with the openings 24 in the tubular rubber members 23 at the ends of the cows teats and the suction then draws the tea'ts inside the cups, the diadownwardly to permit the v. opening 28 verted cup,

phragm 25 of the rubber tubular members 23 forming approximately an air tight connection. When this has been done and the pump is Worked in the manner described to decrease the pressure in the tube 30 and then increase the pressure in the said tube, the suction in themilk chamber 7 serves to draw the milk from the teats, the milk flowing' into the milk chambers 7. When the pressure in the pipe 30 is ,gradually increased it will, -as has been stated, press the valve milk to 4flow from lthe milk chamber 7 into a pail 31 disposed "thereunder, the increased pressure in the milk chamber T also serving; to increase the pressure, in the teat cups which presses against the teats, thus restoring the blood and tissues in them to their normal condition. l

lVhen the stopper 27 is removed from. the in the T of the pipe 80, the stopper 3l is used to close the opening` to prevent loss oi suction or pressure in pipe 30. It will be understood that the tubes 1T may be readily cleansed by a small bristle brush such as chemists use to clean small test tubes. It will also be understood that the valve. 9 and the spring 10 may be removed from the unit 6 so that all parts may be thoroughlv-and conveniently cleansed.

Having thus described my invention I claim as new and desire to secure by Letters Patent:

l. In a milking machine, a milk chamber in one piece shaped substantially like an ins a detachable valve'in one piece for closing the 'opening inthe bottom of the milk chamber, and resilient means in one piece for engaging the milk chamber and the valve for holding 'the valve yieldingly in closed position.

2. In a milking` machine, a pipe having; an opening, a stopper for closing said opening, .a tube with a stopper at one end and detachably disposed in the opening', the stopper having a passage adordinp; comi'nunican tion between the plpe and the tube and benini interchangeable with the rst mentioned stopper, a unit having,Y a milk chamber With an' opening in` its bottom and additional openings, a tube connected with one of the additional openings, a valve for closing the first mentioned opening in the milk chamber, a teat cup connected with the last mentioned tube. and having free communication at all times with the milk chamber, and means connecting; the first tube with another of the said additional openings,

3. In a milking machine, a portable member in a single piece and substantially like an inverted cup, with a valve. seat at its bottom, a valve normally disposed against the outer side olf the valve seat for closing' vthe bottom of tho member, resilient means at the outer side of the valve for pressing' the valve against the valve seat, a teat cup, valveless means connectingl the teat cup with the interior of the member, and stationary -means Jroi: alternately increasing and decreasing the pressure in the portable member for the purpose speciiied.

il. In a milking; machine, a pine line hav. .ing an opening, a stopper tor closing said opening, another stopper interchangeable with the-first mentioned stopper and hav- -ing a passage, and a. unit having a tube secured to the second mentioned stopper at the passage, the second stopper serving` to attach or detach a unit to the pipe line, the opening in which is closed by the first stopper when the unit is detached,

5. In a milking machine, a member in a sigle piece forming a milk chamber having a 'valve seat therebelow with a shoulder for supporting a spring to hold a valve in position at the valve seat, there being an opening .in the member at the upper portion ci the milk chamber Jor the purpose speer tied'.

Y' wherefif have si ned my tho pi sence ol' 

